In this expression, η is the baryon to photon ratio, whereas Ωb and ΩM are the energy densities of baryons and matter, respectively. One characteristic mass scale for galaxies is given by the requirement that the gas cooling time is comparable to the free-fall collapse time for cosmologic...
Curve fitting the ratio changes in power attributable to lesion, showed that estimates of the power of driving signals and the temporal damping moved in reverse directions with increasing extent of lesion, as expected from the theory. A further test was undertaken, to determine whether equal ...
Body mass index (BMI) is a ratio of weight to height used to assess degree of fatness or adiposity of an individual [37]. The measurement is obtained from the calculation of weight in kilograms divided by height in meters squared. BMI is an assessment tool used to estimate degree of overw...
Therefore, we used a relatively large national sample to include middle-aged people over the age of 45 to observe whether there is a similar cognitive decline in this population, so that we can take action as soon as possible. Methods Sample Data were obtained from China Health and Retirement...
The 234U/ 238U activity ratio (AR) is extensively used as a geochemical tool to investigate movement and flow relationships in major hydrological units, in... J Cizdziel,D Farmer,V Hodge,... - 《Science of the Total Environment》 被引量: 29发表: 2005年 ...
bloodbath,bloodletting,bloodshed,battue- indiscriminate slaughter; "a bloodbath took place when the leaders of the plot surrendered"; "ten days after the bloodletting Hitler gave the action its name"; "the valley is no stranger to bloodshed and murder"; "a huge prison battue was ordered" ...
Define mass spectrometer. mass spectrometer synonyms, mass spectrometer pronunciation, mass spectrometer translation, English dictionary definition of mass spectrometer. n. A mass spectroscope that records its data electronically. mass spectrometry n. Am
At the beginning of each week we and many, many like us take our places before a thousand altars, and, as the great Action wherein Christ intended that we should, each of us, intensively participate, proceeds, we stand, kneel, sit absently. For us the Mass remains the measured movements...
We did not estimate trends in measures of adiposity other than BMI, such as waist circumference and waist-to-hip ratio, because these were measured in less than half of all the data sources and their measurement became more common after the 1980s. A systematic review31 of epidemiological ...
In the latter, however, the ratio FTC/PTC is nearly the same in contrast to that found in iodine-sufficient areas where PTC is largely predominant. This has been demonstrated in countries where iodine intake is sufficient and where iodine prophylaxis has been introduced.157 Thyroid carcinoma is ...